3.2 SC Longstroke GT3 Crank - Dynoed!

[Axel84]

RSR Engine dynoed - 316 BHP
well I call it a RSR engine but its more of a street engine.
More meat and potatoes than a Opera screamer.. still screams though
SC engine, 3.25 Longstroke. JE pistons, mahle barrels.
GT3 Crank, Schrick 320/308 cams - RSR rocker arms - Carillo rods, yada yada GT3 cup oilpump.
Built by Richard Chamberlain, CTR Developments - Cambridge.
Car is a 88 930 turbo german car black originally. Backdated to a 72 2.8 RSR.
G50 gearbox, shortened ratios. should shift a bit this thing.

[Axel84]

[Axel84]

[GG Allin]

92 x 76.4 ?

[Axel84]

hmm its 95 MM pistons I believe - and 76.4 crank
is that right?

[GG Allin]

I'm no expert but I believe 95 x 76.4 would be closer to 3.3 - 3.4 liters.

Nice Engine
Nice Car
Nice Shop
Nice Dyno Numbers

[NickP]

Very very nice.

[2.7RS]

I like the shop, garage, barn, museum whatever you want to call it

[356RS]

Confused.......Looks like a Mag engine case?

[Axel84]

nah its a 3.0 SC case.
=) That Im pretty sure of!

[H-viken]

Very nice! Are you in the Oslo area? Would love to see it next time I visit my brother.

[icarp]

Originally Posted by GG Allin

I'm no expert but I believe 95 x 76.4 would be closer to 3.3 - 3.4 liters.

Nice Engine
Nice Car
Nice Shop
Nice Dyno Numbers

This is a great tool for displacement
https://spicerparts.com/calculators/engine-displacement-calculator

This proves to me that the 911 engine loves stroke .
I wonder if the headers and muffler are contributing to the bounce of the TQ curve

Nice engine and great car , well done

[GG Allin]

Originally Posted by icarp

This is a great tool for displacement
https://spicerparts.com/calculators/engine-displacement-calculator

This proves to me that the 911 engine loves stroke .
I wonder if the headers and muffler are contributing to the bounce of the TQ curve

Nice engine and great car , well done

3.25 then, just like he said. I clearly am no expert

Thanks for the link.

[Axel84]

thanks for the nice feedback guys! much obliged!

[Dpmulvan]

What a cramped,unorganized, filthy garage. Someone is living large!

[Axel84]

Its not mine, its the Agent for Singer Europe. They have helped me build the car, stunning result

[Dpmulvan]

Originally Posted by Axel84

Its not mine, its the Agent for Singer Europe. They have helped me build the car, stunning result

Got ya, anyhoo pretty sweet ride ya got there.

[stownsen914]

Lovely looking car, and sounds like it has a healthy powerplant too!

One question - is it unusual that the torque and hp peaks are almost exactly coincident at 6300-6400 RPM?

[winders]

Originally Posted by stownsen914

Lovely looking car, and sounds like it has a healthy powerplant too!

One question - is it unusual that the torque and hp peaks are almost exactly coincident at 6300-6400 RPM?

Yes, the torque is in Newton Meters (Nm) instead of foot pounds. Here is the formula:

P(HP) = T(Nm)*N(rpm)/ 7127

So the crossover is 7127 RPM which matches the graphs.

[trond]

very impressive. Envious, but then it took some effort. Well done !